Journal
INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING
Volume 27, Issue 11, Pages 925-943Publisher
WILEY
DOI: 10.1002/acs.2363
Keywords
fault-tolerant control; FDD; attitude stabilization; partial loss of actuator effectiveness; flexible spacecraft
Funding
- Scientific Research Foundation of the National Natural Science Foundation of China [61004072, 61273175]
- National Key Basic Research Program of China [2013CB035605]
- Program for New Century Excellent Talents in University [NCET-11-0801]
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A theoretical framework for active fault-tolerant attitude stabilization control is developed and applied to flexible spacecraft. The proposed scheme solves a difficult problem of fault-tolerant controller design in the presence of severe partial loss of actuator effectiveness faults and external disturbances. This is accomplished by developing an observer-based fault detection and diagnosis mechanism to reconstruct the actuator faults. Accordingly, a backstepping-based fault-tolerant control law is reconfigured using the reconstructed fault information. It is shown that the proposed design approach guarantees that all of the signals of the closed-loop system are uniformly ultimately bounded. The closed-loop performance of the proposed control strategy is evaluated extensively through numerical simulations. Copyright (c) 2012 John Wiley & Sons, Ltd.
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